Actionscript 3.0 shows a lot of promise. Actionscript is the language of the Flash Player, but Adobe is Open Sourcing the AVM (Actionscript Virtual Machine - basically the Flash Player). And the new Flash and Flex that use Actionscript 3 are looking interesting.
Flash is already almost universal - more so than even Java these days (Thanks Microsoft). So I think it's the future.
I doubt any new languages will be coming out. Unless they have like some major breakthrough, everything can still be done in the current generation of languages. I don't think we'll see a new one till 2020.